Carpenter&#39;s plane



7 June 20, 1933. c. MacALLER 1,914,609

CARPENTER S PLANE Filed Feb. 19, 1932 INVENTOR Cornelius J. MacAller.

ATTO NEY Patented June 20, 1933 UNITED STATES PATENT OFFICE CORNELIUS J". MACALLER, OF DERBY, CONNECTICUT, ASSIGNOR TO ABRAHAM H. LAVIETES, OF SHELTON, CONNECTICUT CARPENTERS PLANE Application filed February 19, 1932.

This invention relates to woodworking tools, and more particularly to a carpenters jack plane.

One object of this invention is to provide a plane of the above nature having improved mechanism for adjusting the cutter blade in which the number of parts has been great- 1y reduced.

A further object is to provide a device of the above nature in which more room is provided in front and on top of the rear handle for the fingers of the carpenters hand.

A further object is to provide a carpenters plane of the above nature which will be simple in construction, inexpensive to manufacture, easy to adjust and manipulate, compact, ornamental in appearance, and very eflicient and durable in use.

With these and other objects in view there has been illustrated on the accompanying drawing one form in which the invention may be conveniently embodied in practice.

In the drawing:

Fig. 1 represents a perspective view of the plane.

Fig. 2 is a longitudinal cross-sectional view through the same.

Referring now to the drawing in which like reference numerals denote corresponding parts throughout the several views, the numeral 10 indicates the body of the plane having the customary fiat smooth bottom plate 11 and two integral parallel longitudinal curved side walls 12 and 13. g

The plate 11 is strengthened by a pair of upright front and rear cross ribs 14 and 15 integral with the bottom plate 11 and said walls 12 and 13, the rear rib 15 being considerably higher than the front rib 14. Intermediate the two cross ribs 14 and 15 the bottom plate 11 is provided with a trans verse slot 16 through which extends the sharp cutting edge 17 of a flat metal. blade 18, preferably made of crucible steel. The lower part of the blade 18 is adapted to rest upon the inclined surface of a triangular-shaped cross rib 19 disposed directly behind the transverse slot 16 and slanting upwardly therefrom. The middle part of Serial No. 594,088.

the blade 18 is supported on the upper edge of the rear cross rib 15.

In order to adjust and lock the plane blade 18 in any desired position, provision is made of an adjusting clamp plate 20 having a wedge-shaped forward nose 21, and a reduced rear section 21a having a longitudinal slot 22 formed therein. At the ends of the slot 22 are a pair of upright lugs 23 and 24 formed integral with said clamp plate 20, and which limit the endwise motion of a rectangular traveling block or nut 25. The upper end of said traveling block 25 is provided with a tapped hole for receiving the threaded shank 26 of a longitudinal adjusting screw 27, while the lower end of said block 25 is loosely fitted within a square hole 28 formed in the upper end of the cutting blade 18.

The forward end of the adjusting screw 27 is provided with a reduced extremity 29 rotatably journaled in the forward upright lug 23, while the rear end of said screw 27 has an enlarged section 30 journaled in the rear upright lug 24 of the adjusting clamp 20. The rear end of said adjusting screw 27 is provided with an enlarged integral knurled knob 30a: for manually rotating the same.

In order to lock the adjusting screw 27 within the lugs 23 and 24, the enlarged section 30 is provided with a peripheral groove 31 centrally located in respect to the upright lug 24 and within which is engaged an upstanding pin 32 rigidly secured within the underside of said upright lug 24.

In order to lock the cutting blade in any desired adjusted position, the adjusting clamp is provided with a transverse rounded groove 33 partially fitting around a cross shaft 34, the extremities of which are securely attached to the side walls 12 and 13, as by heading over the ends thereof. Intermediate the groove 33 and the forward upright lug 23,-the adjusting clamp is provided with a downwardly inclined locking screw 35, the lower end of which is adapted to engage against the blade 18, while the upper end is provided with an integral knurledknob 36.

By means of this construction, it will be obvious that when the locking screw is forced down upon the blade 18, the adjusting clamp 20 will be forced upwardly around the cross shaft 34 as a fulcrum, causing the nose 21 to press the blade 18 tightly against the triangular cross rib 19 and the rear rib 15. The body 10 is also provided with the usual forward handle knob 37 and a rear S-shaped gripping handle 38. -The forward knob 37 is securely attached to the upper surface of the bottom plate 11 by means of a screw bushing 39, which screws over the upper threaded end of a vertical spindle 40, the lower end of which is screwed into a raised boss 41 integral with said bottom plate 11.

The rear handle 38 is similarly attached to the plate 11 by means of a screw bushing 42, and a long inclined screw spindle 43 located within the handle 38, having threaded engagement at its lower end with a raised boss 44 at the rear end of said plate 11. The handle 38 is prevented froln lateral. rotation by means of a small boss 45 located on the plate 11, said boss 45 having a tight fitting engagement in a countersunk hole 46 formed in the handle 38.

Operation In the operation of adjusting the cutting blade 18, the operator will first loosen the locking screw 35, and then by manually rotating the knob 306:, the blade 18 will be forced downwardly or upwardly to the desired adjusted position with respect to the base plate 11. The blade may then be locked securely by means of the locking screw 35.

While there has been disclosed in this specification one form in which the invention may be embodied, it is to be understood that this form is shown for the purpose of illustration only, and that the invention is not to be limited to the specific disclosure but may be modified and embodied in various other forms without departing from its spirit. In short, the invention includes all the modifications and embodiments coming withinthe scope of the following claims.

Having thus fully described the invention what is claimed as new and for which it is desired to secure Letters Patent, is:

1. In a woodworking plane, a base having a transverse slot, a pair of handles attached to said base, an inclined cutting blade adapted to project through said slot, a clamping plate located above said blade, a cross shaft connected with said base to provide a fulcrum for said clamping plate,

' an adjusting screw journaled in said plate,

a traveling nut on said screw for connecting said screw to said blade for ad usting the same, and means for locking said blade in adjusted position.

2. In a woodworking plane, a base having a transverse slot, apair of handles attached to said base, an inclined cutting blade adapted to project through said slot, a clamping plate located above said blade, means connected with said base to provide a fulcrum for said clamping plate, an adjusting screw journaled in said plate, said blade having an aperture near the top thereof, and a traveling nut located on said adjusting screw, said nut extending down through said plate and having its lower portion located in said aperture.

3. In a carpenters plane, a base having a transverse slot and a pair of spaced upstanding ribs located behind said slot, a blade adapted to rest upon said ribs and extend through said slot, a clamping plate located above said blade, a cross member on said base to serve as a fulcrum for said clamping plate, a. longitudinal adjusting screw journaled in the upper end of said clamping plate, a traveling nut on said screw, said nut having a downwardly extending portion passing through said plate and said blade to cause the position of said blade to be adjusted when said screw is ro tated, and means for locking said plate in adjusted position.

4. In a carpenters plane, a base having a transverse slot and a pair of spaced upstanding ribs located behind said slot, a blade adapted to rest upon said ribs and extend through said slot, said blade having an aperture near the top thereof, a clamping plate located above said blade and having an elongated longitudinal slot, a cross member on said base to serve as a fulcrum for said clamping plate, a longitudinal adjusting screw journaled in the upper end of said clamping plate in alinement with said longitudinal slot, and a traveling nut on said screw, said nut having a section passing through said slot and engaging said blade to cause the position of said blade to be adjusted through a considerable length when said screw is rotated.

5. In a carpenters plane, a base having a transverse slot and a pair of spaced upstanding ribs located behind said slot, a blade adapted to rest upon said ribs and extend through said slot, a clamping plate located above said blade, a cross member on said base to serve as a fulcrum for said clamping plate, a longitudinal adjusting screw journaled in the upper end of said clamping plate, and a traveling nut on said screw, said nut having a section passing through said plate and engaging said blade to cause the position of said blade to be adjusted when said screw is rotated, said clamping plate having a pair of upstanding lugs, said screw being journaled at its ends in said lugs.

6. In a carpenters plane, a base having a transverse slot and a pair of spaced upstanding ribs located behind said slot, a

blade adapted to rest upon said ribs and eXtend through said slot, a clamping plate located above said blade, a cross member on said base to serve as a fulcrum for said clamping plate, a longitudinal adjusting screw journaled in the upper end of said clamping plate, a traveling nut on said screw, said nut having a section passing through said plate and said blade to cause the position of said blade to be adjusted when said screw is rotated, and manually operated means extending through said clamping plate into engagement with said blade to lock said blade in any desired adjusted position.

In testimony whereof, I have affixed my signature to this specification.

CORNELIUS J. MAGALLER. 

